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EN 1.8550 Steel vs. ACI-ASTM CN3MN Steel

Both EN 1.8550 steel and ACI-ASTM CN3MN steel are iron alloys. They have 50% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.8550 steel and the bottom bar is ACI-ASTM CN3MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300
180
Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 11
39
Fatigue Strength, MPa 470
250
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
80
Tensile Strength: Ultimate (UTS), MPa 1000
620
Tensile Strength: Yield (Proof), MPa 760
300

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 440
1100
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 40
13
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
33
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 1.7
6.2
Embodied Energy, MJ/kg 23
84
Embodied Water, L/kg 67
200

Common Calculations

PREN (Pitting Resistance) 2.3
46
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
200
Resilience: Unit (Modulus of Resilience), kJ/m3 1550
210
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 36
21
Strength to Weight: Bending, points 29
20
Thermal Diffusivity, mm2/s 11
3.4
Thermal Shock Resistance, points 29
14

Alloy Composition

Aluminum (Al), % 0.8 to 1.2
0
Carbon (C), % 0.3 to 0.37
0 to 0.030
Chromium (Cr), % 1.5 to 1.8
20 to 22
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 94.4 to 96.3
41.4 to 50.3
Manganese (Mn), % 0.4 to 0.7
0 to 2.0
Molybdenum (Mo), % 0.15 to 0.25
6.0 to 7.0
Nickel (Ni), % 0.85 to 1.2
23.5 to 25.5
Nitrogen (N), % 0
0.18 to 0.26
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.035
0 to 0.010